WARNING: While these are only theories, not necessarily spoilers, we do feel the need to warn you that the information below could be indicative of what's to come in the show. Read at your own discretion.

1. The Northern Conspiracy

According to this theory, Robb Stark legitimized Jon Snow as a Stark before he died, making him heir. If this is in fact the case, five people would know about it: Greatjon Umber, Galbart Glober, Maege Mormont, Edmure Tully and Jason Mallister. All of them are still alive, which means the Northern Lords could be secretly plotting to get Jon on the throne as King in the North.

While we like the idea that some people are fighting for Jon instead of against him, we think Jon and Westeros aren't destined to be divided. We love the idea of Jon on a throne, but he could aspire to greater places than just the North.

2. Jon Snow is Azor Ahai

Another theory about everyone's favorite Snow is that he is legendary hero Azor Ahai, who is also known as the Prince That Was Promised. According to the legend, Azor Ahai defeated the Others and will return to defeat them again when necessary. Melisandre thinks Stannis Baratheon is Azor Ahai. Of course, everyone else doesn't really think Stannis is all that and a bag of chips. Jon seems like a much more likely hero.

3. Varys is supporting the Targaryens even still

One of the big questions in the series is: What exactly motivates Varys? He's got a lot of power, but his direction isn't clear. This theory is that while Varys realized King Aerys was crazy and unfit to rule, he still wants to see a Targaryen on the throne and has been secretly protecting Daenerys (and maybe other remaining members of her family) this entire time.

4. Southron Ambitions

This complicated theory assumes that the politics of Westeros was a lot more complicated than we know before Robert's Rebellion — and that there may have been another reason motivating the rebellion. The theory suggests Ned's father Rickard was trying to unite the kingdoms before the plan collapsed. While this doesn't tell you anything about the future of Westeros, it does provide a different look at the motivations of the characters. For a lengthy look at this complicated theory, we recommend you check out this thread at Tower of the Hand.

5. Ned Stark was protecting Dany at King's Landing

Why did Ned Stark stay in King's Landing even after he gave up the position as Hand of the King? We know that Ned made a promise to his sister Lyanna before she died, and many think the reason he stayed has to do with that promise. According to this theory, Ned vowed to protect Daenerys because she is actually Lyanna's daughter.

6. A + J = T

This is a newer theory that suggests Tyrion is not in fact Tywin's son but the child of Mad King Aerys Targaryen. According to the theory, Tywin's wife Joanna was having an affair with Aerys and bore Tyrion.

Out of all the theories, we like this one the least because if it's true, it negates the huge relationship between Tyrion and Tywin, which is so central to both their characters. Though we do think Tyrion is destined to rise above his family drama, we don't think it's Targaryen blood that will get him there.

7. R + L = J

This is one of the most well-known and accepted fan theories, and it's our favorite. It assumes that Jon Snow is not Ned Stark's son. He is, in fact, a Targaryen. It suggests that his father is Rhaegar Targaryen (Daenerys' dead older brother) and his mother is Lyanna Stark (Ned's sister). Knowing that Robert wanted to kill all the Targaryens, Ned protected Jon Snow by claiming him as his bastard son. This would also make Jon Daenerys' half-brother and begin to explain Dany's prophetic dream that "the dragon has three heads."